CERTIFIED/APPROVED: The official bat for USA Softball Championship Play must meet all the USA Softball specifications and the requirements of Rule 3, Section 1, and:
The official bat, made up of the knob, handle, grip, taper, barrel and end cap shall be free of burs, dents cracks, sharp edges, rattles and show no signs of excessive wear. The official bat may be marked OFFICIAL SOFTBALL by the manufacturer, and shall be no more than 34 inches long nor exceed 38 ounces in weight. The official bat shall not be more than 2.250 inches in diameter at its largest part, including any tolerance for expansion. The official bat must bear either the ASA 2000 Certification Mark, ASA 2004 Certification Mark, or ASA 2013 Certification Mark (Slow Pitch, Men’s Adult Fast Pitch, Junior Olympic Boy’s Fast Pitch and Men’s Modified only), as shown below and must not be listed on the ASA Non-Approved Bat List with 2000 or 2004 Certification Mark.
Exception: Senior Softball bats may be used in Senior Championship Play only.
All bats in USA Softball Championship Play, except Seniors, must pass the ASA Bat Performance Standard. All bats having the 2000, 2004 or 2013(Slow Pitch, Men's Adult Fast Pitch, Junior Olympic Boy's Fast Pitch and Men's Modified Pitch ONLY) Certification Mark and not listed on the list of Non-Approved bats with Certification marks will be allowed in USA Softball Championship Play. Bats with the 2013 Certification Mark will be allowed in Slow Pitch National Championship Play Only. For your convenience, USA Softball's website has a listing of all approved bats and bats that have ASA Certification Marks and are no longer approved.